Profiler output rows are dropped due to incorrect gpu time stamp values

The Visual Profiler 4.0.17 displays for my code the message box with:

In this profiling session some profiler output rows are dropped due to incorrect gpu time stamp values and the profiler output is incomplete. Context_0: Number of rows dropped = 4.

The profle of the program is then incomplete, one half of the kernel launches is omitted, even though they generated correct output. Where can be a problem?

Would you mind upgrading to the latest CUDA 5.0 Visual Profiler integrated into Nsight Eclipse Edition. It’s available here - https://developer.nvidia.com/nsight-eclipse-edition